* {
    margin: 0;
    padding: 0;
    font-family: "Microsoft Yahei";
}

body {
    background: #f2f2f2;
}


/*包裹层*/

.warp {
    width: 640px;
    margin: 0 auto;
}


/*头部#4060d1*/

.header {
    background: #4A7A55;
    height: 95px;
    width: 640px;
    position: fixed;
    top: 0;
}

.return {
    float: left;
    background-size: 40px;
    width: 130px;
    height: 95px;
}

.return img {
    padding: 25px 35px 25px 35px;
    width: 45px;
    transition: background 0.5s, padding-left 0.5s, padding-right 0.5s;
}

.return img:hover {
    background: #900;
    padding-left: 5px;
    padding-right: 65px;
}


/*头部图片*/

.pic {
    height: 320px;
    background: url(../img/MyCsln.jpg);
    margin-top: 95px;
}

h1 {
    color: white;
    font-size: 38px;
    line-height: 95px;
    padding-left: 100px;
    text-shadow: 1px 1px 5px black;
}


/*中间正文部分*/

.content {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: white;
    padding-bottom: 30px;
    border-bottom: 25px solid #4A7A55;
    position: relative;
}



.content p {
    font-size: 30px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-left: 10px solid #800;
    padding-left: 10px;
    border-bottom: 1px solid #800;
}




.content .timing{
    background: #4A7A55;
    color: white;
    font-size: 36px;
    text-shadow: 1px 1px 1px black;
    height: 60px;
    border-top: 10px double white;
    border-bottom: 10px double white;
    line-height: 60px;
    text-align: center;
}

.content h2{
    margin-top: 20px;
    font-size: 30px;
    border-left: 10px solid #800;
    border-bottom: 1px solid #800;
}
.content h3{
    font-size: 28px;
    margin: 20px 20px;
    text-align: justify;
    text-indent: 2em;
}

.content span{
    font-size: 26px;
    line-height: 48px;
}

.content input{
    width:38px;
    height: 28px;
}

/*答案文字*/
.bb{
    float: left;
    height:48px;
    width: 442px;
    border-bottom: 1px solid #800;
    margin-left: 80px;

}
/*答案选择框*/
.cc{  
    float:right;
    height: 48px;
    line-height: 75px;
    border-bottom: 1px solid #800;
    margin-right: 80px;
}
/*清除浮动*/
.clear{
    clear: both;
}

/*提交按钮*/
.tijiao{
    text-align: center;
}

.tijiao button{
    width: 400px;
    height: 50px;
    font-size: 30px;
    background:#800;
    color:white;
    border-radius: 15px;
    text-shadow: 1px 1px 1px black;
    margin-top: 40px;
    box-shadow: 0px 5px 10px gray;
    border:3px solid white;
    font-weight: bold;
}
